Description

As a user, I don't want to see jumping UI when the Import from Git flow (or other forms) waits that network call is handled correctly.

The PatternFly Button components have a progress indicator for that: https://www.patternfly.org/components/button/#progress-indicators

This should be preferred over the manually displayed indicator that is shown sometimes (esp on the Import from Git page) in the next line.

Acceptance Criteria

1. Use the button loading indicator instead of a loading indicator next to the button ("on all forms")
   1. Import from Git
   2. Import Container image
   3. Pipelines Builder (Pipelines create page)

Additional Details: